Kourtney Kardashian

Motherhood has most definitely changed me and my life. It's so crazy how drastic even the small details change — in such an amazing way. Even silly things, like the fact that all of my pictures on my cell phone used to be of me at photo shoots — conceited, I know! — but now every single picture on my phone is of Mason.

My best friend and I went to sleep-away camp every summer. We'd share stories of making out with boys, but we never did, so we made it all up. My real first kiss was at a friend's house when I was in junior high. He was such a good kisser, and we're still close friends!

Being alone and actually sitting with our own thoughts can lead to such growth and realizations that are rare in our everyday busy lives.

I've been wearing lipstick since I was in 7th grade. That was our form of daring self-expression, because we had to wear uniforms in school. It made our teachers so angry.

Now that I have a daughter, I've been thinking about how I'll define beauty to her. I watched a video of Kendall when she was three, and she was putting on makeup. I don't know how I feel about that. But my daughter already watches me do it. When do you let them start wearing it? I don't know yet.